Osdhezcn Hexagon Air Quality Analyzer Co2 Detector PM2.5 Temperature Humidity Meter Alarm for Time Display Meter Infrared Air Tes

This air quality monitor with unique hexagon design, can be used in home & office. Wall-mounted CO2 Meter with LED large display, easy to watch in a distance. When the arbon dioxide concentration exceeds the standard, it will automatically remind of the alarm. Automatically detect OC2, pm2.5, temperature, humidity, with for time display. Detection range: PM2.5 (0-999 ug/M³), CO2 ( 400-5000 ppm).